-
Author(s):
S. Kawata, M. Shiromoto and T. Teramoto
-
Title:
Density-Carrying Particle Method for Fluid
Date of publication:
Nov.1991
-
Key words:
density-carrying particle method, particle-in-cell(PIC) method, fluid simulations, full-particle method, area-weighting method, compressible super particle
-
Abstract:
A new particle method in which a numerical particle carries density of physical quantities, is introduced and discussed in this paper. In the conventional PIC method particles do not carry the density of physical quantities but carry the mass, momentum and energy themselves. In order to simulate the large change in the physical quantities, it is necessary to change the particle size. However the change in the particle size in the conventional PIC method may lead an unphysical error as shown in Fig.1, when it is applied inappropriately. Our particles carrying the density eliminate this unphysical error and can represent the large change in the physical quantities: One of example computations shows that in an adiabatic expansion the four figures of density change can be successfully simulated.
-
|
